Inverted incandescent lamp.



H. LYON.

INVERTED INCANDESCENT LAMP.

APPLICATION FILED MAY 24, 1913.

l 1 72, 6 1 7 Patented Feb. 22, 1916.

, 2 SHEETSSHEET x.

24 253 S 2 2 Z4 Z9 22 i; \4 I Q 7 1 I 26 /7 'l 1 8/ 1/ I INVENTOR WITN ESSES H. LYON.

lNVERTED INCANDESCENT LAMP.

Patented Feb. 22, 1916.

2 SHEETSSHEET 2.

APPLICATION FILED MAY 24, 19%3.

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semen iiYon, pr enono'E'sTE c'IrY, NEW annsnY, as'sienon TO w ts aea trefnr COMPANY, OF GLOUCESTER CITY, N W JEEsEY, A CORPORATION on NEW JERS Y.

I VEETED INcANnEscENT LAMP.

To all whom it may concern:

Be it liIlOWIl11h21t I, HO\VARD LYON, a citizen of the United States, residing at Gloucester City, Camden county, New Jersey, have invented. a new and useful Improvement in Inverted Incandescent Lamps, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of, this specification, in which f Figure 1 is 'a side elevation, partly in section, showing one foam ofmy invention as appliedto a chandelier; Fig. '2 is an enlarged vertical section of the burner and supply tube; :and Fig. 8 is a vertical sectional view taken, at right angles in Fig. 2, showing in de'tail the preferred form of raceway which I employ. a V

My invertion relates to incandescent gas lampSaland isdesigne-cl, first, to provide a chandelier having a plurality of inverted incandescent burners supplied from a common mixing tube, which is sutficiently removed from the heat of the burners to give the desired results; second, to improve the actuating connectionv for the control valve to the mixer, as well as the control valve for the gas; and, third, to provide an inverted incandescent gas lamp which can be turned down without carbonizing the mantle.

In the drawings, referring to the form of Figs. 1 and 2, 2 represents a depending gas supply pipe, the lower end of which is screwed into a valve chamber 3, which in turn is screwed into a small casting 4c having communicating side passageways 5 and 6 leading, the gas to a vertically extending pipe 7, which carries the gas down to a hollow fitting 8 having an upwardly extending'jet opening 9 and needle valve 10. The needle valve stem extends downwardly through the lower part of the fitting, and may be adjusted by a handle 11 againstthe spiral spring 1 2. I have shown the stem of the fitting 8 as provided with an ornamental ring 13 withlock nut or washer 14. Above the needle valve fitting, and separated therefrom by arms 15 of aconnecting ferrule or sleeve 16, which may bescrewed to the fitting 8, is the'mixer tube 17. Vithin this tube is placed a liner or raceway 18, which extends to the lower end of the mixer tube and has a cylindrical bore 19 for the major portion of its length, this cylindrical bore merging into a flaring or diverging bore portion 20.

Specification of Letters Patent.

Patented Feb. 22,

Application filed May 24, 1913. Serial No. 769,619.

This liner tube and mixer discharge into a tube 21, which leads the gas into the main cavity of the casting l, whence it divides and passes through the side pipes 22 to the inverted gas burners 23 shown in Fig. 1.

The valve casing 29fcontains the usual control valve whose projecting stem is provided in the usual manner. The lower part 26 of the shell, together with its upper part 29 surrounds and incloses the. valve, and preferably the mixer tube and needle valve fitting as well as the supplytube 7 for the gas, thus giving a neat and ornamental appearance. c

In'Fi'g. 3 I show in detail the preferred form otlineror raceway for, the mixing tube, whichI have found by long experimentation will give such a perfect mixture, especially in connection with further diffusion before reaching the burner, that the burners may beturned down and still give a blue Bunsen flame such as will not carbonize the mantles. I have discovered that if thegas and air are perfectly 'mixed by proper shape, length and size of liner,or inner bore of the mixing tube, the mixture may then be taken to substantially any distance or in any direction, and will give an 'efiicient blue flame even when turned down.

In the ordinary inverted burners, if the flame turned downa yellowv tinge appears in the fiame which will cause the carbonizin'g of the mantles. This I overcome by my peculiar and novel arrangement and shape of the raceway for the mixer tube. will now give an example of this tube, which operates to give the improved result with 3 to y 10 cubic feet of gas per hour. In this case I use a straight linertube 30, shown in'Fig.

3, of about two'inches long from the point from the level a to the level 6. Beginning at the entrance for gas and air, and extend ing for about 1-1/4: inches, I make the inner bore of this tube cylindrical andof about 19/64 of an inch diameter. At the end of the 1 1/4: inch cylindricalfbore, I then ream out the tube in tapered form for about 8/4 of an inch in length, this "diverging outwardly from 5/16 to about 13/32 of an inch bore at its outerend. This diverging por tion is shown at 31, and from its end a straight tube portion 32 extends for prefi' erably about six inches, and which maybe of any desired diameter, preferably having.

of combustion from the lamp, Its temperature should always be below 140 degrees C. This is one reason that the ordinary cluster inverted lamp does not permit of turning down, since the manifold, mixer tube, &c., are heated to about 250 to 300 degrees C. by the rising products of combustion. The above proportions are given for a. certain volume of gas, and will be changed according to the amount of gas flowing, but in all cases the tube should be at least two inches long and should have the straight bore merging into the diverging or flaring portion. The diffusion tube through which the gas flows from the raceway of the mix ingtube to the burners should have a diameter at least twice that of the combined outlets of the burners.

The advantages of invention result from the use of the mixing tube common to several burners, and gives the same mixr ture and the same burning power to each lamp. By carrying the gas downwardly and then returning it upwardly before en:- tering the branch tubes to the burners, the regulating valve for the gas is brought within easy reach of the operator. Also the control levers for the gas valve may be short so that the chains may close together, thus giving a better appearance. The ornamental shell surrounding the central fittings gives a neat and ornamental appearance, while the peculiarities of the raceway or liner tube for the mixer are found to provide for turning down the burners without carbonizing the mantles.

Certain features of my invention maybe used without other features; the needle valve maybe directed downwardly into a mixer tube which depends and supplies the mixture downwardly into the fitting 4, and other changes may bemade without departing from my invention.

I claim:

1. A chandelier for a plurality of separated incandescent gas lamps, comprising a fitting, an upwardly extending gas supply pipe connected to said fitting and constituting the support for the chandelier, a commen gas and air chamber within said fitting,

a plurality of laterally extending combined gas and air supply pipes connected. to the fittingland communicating with the gas and air chamber, means for supporting a burner and glassware on the ends of each ofsai d pipes, a mixing tube extending downwardly, from the fitting and communicating with the gas and air chamber,a needle valve casing below the lower end of the mixing tube, a needle valve within said casing forrcon trolling the supply of gas to the mixing tube,

means for admitting air to the mixing tube,

a gas supply tube communicating .witlrthe gas supply pipe and connected to the needle valve casing, and a valve for shuttingoff the supply of gas to the needle valve casing; substantially as described A. A. chandelier lorv a plurality of separated incandescent gas lamps, comprisinga fitting, an upwardly-extending gas supply pipe connected to said fitting and constitute ing the support for the chandelier, a coma men gas and air chamber within said fitting,

a plurality of laterally extending combined gas and air supplypipes connected to the V fitting and communicating withthe gas and air chamber, means for supporting a burner and glassware on the ends of each of said pipes, a mixing tube extending: downwardly from the fitting and: communicating with. the gas and air chamber, aneedle valve casing below the lower end of the mixing tube, a needle valve within said casing and controlling the supply of gas to the mixing tube, means for admittmg'air to themixing tube,

a-gas supply tube communicating with the gas supply pipe and connected to the needle valve casing, and a valve for shutting ofi thesupply or gas to the needle valve casing, to-- gether with a canopy inclosing the fitting,

gas valve, mixing tube, needle valve cha'm;

her, and the tube connecting the needle valve chamber with the main gas supply pipe; substantially as described.

8. A fitting for chandelier for incandescent gas lamps having a body portion, there-be ing a gas chamber and a gas and air chamher in said body portlon in approximately the same horizontal plane, means for con necting oppositely extending inlet and outlet pipes to the gas chamber, means for connecting outlet pipes to the gas and air cham-' her, at right angles to the gas inlet and outlet pipes, and means for connecting a mixing tube to the gas and air chamber parallel with the gas lnlet and outletpipes; substan-' tially as described 4. A chandelier for a plurality of sepa- 7 rated inverted incandescent gas lamps, com: prising a fitting, there being a plurality of chambers within said fitting, a gas supply pipe connecteld to said fitting and communieating with one of said chambers, aplurality of laterally extending combined air and gas supply pipes connected. to said fitting and communicating with the other chamber,

a mixing tube connected to said fittingan'dv extending downwardly therefrom, said mixing tube communicating with the second chamber, a needle valve casing below the mixing tube and in line therewith, a gas supply tube connected to the needle valve casing and'the fitting, said gas supply tube opening communication between the first chamber and a space within the needle valve casing, means for supplying air to the mixing tube, and a needle valve within the needle valve casing for controlling the supply ol gas; substantially as described.

A chandelier for a plurality of sepa-' rated incandescent gas lamps, comprising a fitting, an upwardly extending gas supply pipe connected to said fitting andcommunicating with the gas chamber in said fitting, a needle valve casing supporting below said fitting, a gas supply pipe supporting the needle valve casing connected to the fitting and adapted to supply gas from the gas chamber in the fitting to the interior of the needle valve casing, a vertically disposed needle valve in said casing, a gas and air chamber within the fitting, a plurality of gas and air supply tubes extending in radialdirections from the fitting and communicating with the gas and air chamber, and a downwardly extending mixing tube communicating with said chamber extending to a point slightly above the needle valve casing, said mixing tube extending parallel with the gas supply pipe connecting the gas chamber and the fitting with the needle valve casing; substantially as described.

In testimony whereof, I have hereunto set my hand.

HOWARD LYON.

Witnesses: I

J. H. JOHNSON, EDGAR LENTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

